Improvement in car-axle boxes



UNITED STATES PATENT Orrron,

DAVID A. MORRIS, OF NEW YORK, N. Y.

IMPROVEMENT lN CARI-AXLE BOXES.

Specification forming part of Letters Patent No. 157,534, dated December8, 1874; application filed March 26, 1874.

To all whom it may concern:

Be it known that I,'DAVID A. MORRIS, of New York, county of New York andState of New York, have invented certain new and useful Improvements inAnti-Friction Journals for Railway-Cars, of which the following is aspecification:

My invention relates to that class of journal-boxes for railroad-caraxles in which a series of rollers are held in a cage placed Within acylindrical box, and the journal is inserted through the center of thecage between the rollers.

The nature of my invention consists in a loose ring provided with cogson its interior circumference, which gear with pinions upon the journalsof the rollers, for the purpose of controlling the action of therollers, and compelling them to revolve uniformly, thereby keeping themtrue and round; also, in a revolving plate and cones inserted in the capof the box, to reduce the friction caused by the lateral play of theaxle. It also consists in a washer and annular groove in the head orbackend of the box, to form oil-stops and prevent the oil from beingdrawn out of the box by the axle.

In order to enable others skilled in the art to which my inventionappertains to make and use the same, I will now proceed to de' scribeits construction and operation, referring to the annexed drawing, inwhich- Figure l is a vertical section of a journalbox embodying myinvention. Fig. 2 is a side view of the cage and rollers with the loosering, and Fig. 3 is a front view of the same with the front plateremoved.

A represents a cylindrical journal-box, of which B is the head or innerend, and O the cap or outer end. The cage within this ox is composed oftwo annular rings or plates, D D, connected by means of rods to a, andthe plates" provided with slightly-elongated slots, in which thejournals b b of the rollers E E are placed, and allowed to play radiallyto and from the center for a short distance. Each roller-journal b, onone side, is provided with a small cog-wheel or pinion, d, between therollers and the plate on that side, and around all these pinions isplaced a loose ring, G, which is provided with cogs around its innercircumference, and gears or meshes with the pinions. H represents thecar-axle inserted through the center of the cage and rollers.

When the car is in motion it will be seen that the loose ring G, orcontroller, as I term it, travels with the rollers, but it moves veryslow, as compared with the axle. On a full-sized car-box I have foundthat the axle makes a little more than thirteen revolutions while thecontroller makes one; and there is an ease of action that cannot be hadwith a fixed controller.

The pinions or cog-wheels d upon therollerjournals are to be made assmall as possible, thereby reducing the travel of the pitchline.

With the movable controller there is no great strain on any of the cogsat any time. The work they have to do is very slight and yet veryimportant. While the rollers are making about two-thirds of therevolution around the cylinder there is no pressure on them, and it isthen that the controller does its duty, by compelling the rollers tocontinue revolving at the same speed they revolve at when and where thepressure is on. Then, by having the rollers a little larger or a littlesmaller than the axle, the line of pressure from the axle to the top orsupporting side of the cylinder, through the axis of the rollers, will Mbe forever varying. This prevents the rollers from becoming flattened,and ceasing to revolve at all.

In the cap 0 of the journal-box is made a circular recess, the bottom ofwhich is made annular for the reception of a series of cones, hh, whichfill said annular portion of the recess. On top of these cones is placeda plate, I, filling the recess, said plate revolving around'acenter-bolt, f, when the axle comes in contact therewith, thusmaterially reducing the friction caused by the lateral play of the axle.Around the axle H, and fitting in the beveled opening in the head B ofthe box, is a hollow or grooved washer, m, which forms an oil-stop,

to throw back any oil that tends to be drawn out by the revolving axle.In the inner face of the head B is made acircular groove, 13, concentricwith, and a suitable distance from,the washer m, which groove preventsthe oil from reaching the axle behind the washer.

I am aware that a cage has heretofore been used for holding rollers intheir proper posihinedin the cap 0 of the journal-box, substan tially asand for the purposes set forth.

3. The head B of the journal-box, having groove 41 and the washer m sunkin a groove, all combined to operate substantially as set forth.

In testimony that I claim the foregoing as my inventionI hereunto aflixmy signature this 25th day of March, 1874.

DAVID A. MORRIS.

Witnesses:

WM. W. LUYsTER, R. A. MORRISON.

